LG 43LF5900 Service Manual page 55

Contents of Standard Repair Process Detail Technical Manual
No. Error symptom
21
22
23 B. Power error_No power
24
25
B. Power error_Off when on, off while
26
viewing
B. Power error_Off when on, off while
27
viewing
28
C. Audio error_No audio/Normal video
29
C. Audio error_Wrecked
30
audio/discontinuation
D. Function error_ No response in remote
31
controller
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Only for training and service purposes
Content
Check front display LED
Check power input Voltage & ST-BY Voltage
Checking method when power is ON
POWER BOARD voltage measuring method
POWER OFF MODE checking method
POWER BOARD PIN voltage checking method
Checking method in menu when there is no
audio
Voltage and speaker checking method when
there is no audio
Voltage and speaker checking method in case of
audio error
Normal Remote controller operation checking
method
Motion Remote controller operation checking
method
Continued from previous page
Page Remarks
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A5
A22
A18
A24
A25
A25
A27
A29
LGE Internal Use Only